Heating system



July 1937, c. G; BORDEAUX HEATING SYSTEM Filed May 4, 1933 ,4 7' Tak/vsYs Patented July 20, 1937 UNITED STATES PATENT @FFME Claude G. Bordeaux,Albany, N. Y. Application May 4, 1933, Serial No. 669,410

2 Claims.

My invention more particularly relates to a vapor heating system whichis particularly applicable to Vehicles propelled by internal combustionengines, although it is not limited thereto.

The general objects of my invention are to provide a vapor heatingsystem which is simple and compact and which has a quick and effectiveheat radiation as compared with systems installed in the circulatingsystem connected with the radiator and with the cylinder jacket whichhave hitherto been proposed.

Another object of my invention is the provision of an unobstructedcirculating system including a steam generator and a radiator operatingat a predetermined pressure with associated means for introducing waterinto the system and maintaining a substantially constant quantity.

Other objects of my invention Will appear in the specification and willbe particularly pointed out in the claims.

My invention will best be understood by reference to the accompanyingdrawing in which* Fig. 1 is a side elevation of a device embodying myinvention;

Fig. 2 is a perspective View or the vapor generator;

Fig. 3 is a longitudinal sectional View of a check valve;

Fig. 4 is a sectional view illustrating a valve located in the by-passaround said check valve. and

Fig. 5 is a View similar to Fig. 4 illustrating a modied form in theby-pass.

Like reference characters indicate like parts throughout the drawing.

Referring to the drawing I8 is aninternal combustion engine of a vehiclein connection with which I have illustrated my invention. A radiator ilis connected to the Water jacket of the engine by suitable connectionsl2 and i3. .An exhaust pipe i4 leads from the engine in the usualmanner. Y

A circulating system indicated generally at l5 comprises a vaporgenerator indicated generally at I6 and a radiator il which may be ifdesired the ordinary hot water radiator that has commonly been used onvehicles. The vapor generator is preferably formed with a loop |8 whichis located in the exhaust pipe I4, the ends |8| and |82 preferably beingthreaded as illustrated and each provided with a flange lil.Y The bentends |8| and |82 of the pip-e forming the generator pass throughopenings 2li in the exhaust pipe as best shown in Fig. 2, a union 2|connecting one end |8| of the generator to a pipe 22 which passesthrough a wall 23 of the body of the car and connects to the radiatorIl. The return of the circulating system comprises the pipe 24, leadingfrom the radiator l1 to an enlargement 28 in the pipe 25 which connectssaid er1-y largement to the other end |82 of the generator pipe.preferably used to connect the pipe 25 to the end |82 of the generator.

Liquid is supplied to the circulating system through a pipe 26 which maybe connected at any suitable point to the water cooling system of themotor. In the embodiment illustrated, the pipe 26 is connected at 2l tothe water jacket Which forms a part of the Water circulating system ofthe motor.k nicates with the circulating system l5.

A check valve 38 is located in the pipe 26. A by-pass indicatedgenerally at 39 is connected to the pipe 26 on opposite sides of saidcheck valve A pipe connection 34 (Fig. 4) is threaded into the casing 3Hof the pop valve 3| and the inner end thereof provides a seat for aValve member 35 which is preferably generally cylindrical in form, butprovided at its side with longitudinally extending grooves 36. The valvemember 35 is normally depressed against the nipple connection 3i by aspring 37 which is designed to be oompressedwhen a predeterminedpressure, for example, ten pounds, has been ex- A union similar to thatabove described is Y The other end of the pipe commupipes, vaporgenerator and radiator included in my heating system. Obviously, watercannot entirely lill the heating system due to the fact that no outletis provi-ded therein for air, hence the air which is trapped thereinwill prevent the same from becoming entirely iiooded. When the motor isinitially started, waste gases or exhaust gases will be conducted fromthe cylinders of the motor through the exhaust manifold i4 and aroundthe vapor generator i6. 'Ihe generator, being preferably formed from amaterial having the characteristics of resistance to corrosion from theexhaust gases and high heat conductivity, will transfer the heat fromthe exhaust gases to the water therein.

' When the motor is started, the pump which circulates liquid throughthe radiator of the vehicle and the Water jacket surrounding' thelcirculating system being prevented for reasons that have already beenpresented. The pressure which is created in the water block ispractically instantaneous whereas it requires an appreciable time tobring the generator up to a temperature suliiciently high to causevaporizaton of the water therein to take place. When the generatorvaporizes the liquid therein, a pressure is created in the circulatingsystem and when it reaches ten pounds, the by-pass valve 3| opensthereby permitting fluid from the circulating system of the heater to beforced through the pipe connection 26 into the water jacket, since thepressure therein is below that at which the valve 3l opens. Thecirculating system is thereby relieved of the excess amount of liquidtherein and of the excess pressure. -As soon as the pressure in thecirculating system falls below ten pounds, the by-pass valve 3i isclosed.

It will be understood that when the vehicle on which the heating systemis installed stops, the exhaust gases no longer pass over the.generator, and when the vehicle stops for any appreciable time, thegenerator cools and when the car is again started liquid is again forcedinto the circulating system and the cycle of operation above describedis repeated.

The valve 38 is thus used only as an emergency valve for the purpose ofrelieving the circulating system of excess pressure when the sam-e isooded with liquid as nearly as it may be and the water in the generatorheated thereby creating an excess pressure therein. Under normaloperating condition the vehicle may run for an entire trip or for anentire day without the valve 38 being operated, the valve 3l beingoperated only at the time of, starting the vehicle and possibly afterthe motor has been idling.

The system embodying my invention thus provides a single connection onlyfrom the water jacket to the circulating system. It will be evident thatmy heating system comprising only the one pipe connection leading fromthe water jacket of the circulating system of the vehicle to thecirculating system of the heater is simple and inexpensive as comparedwith a system comprising two such connections and is more ehi-cient asthe liquid is not returned to the water jacket under normal operatingconditions as is necessarily the case when the circulating system of thevehicle is included as a part of the heating circulating system.Furthermore, the pressure and therefore the temperature is maintainedsubstantially constant under normal operating conditions thus deliveringa substantially constant amount of heat to the vehicle. Furthermore, thesystem embodying my invention is comparatively simple and compact.

I have illustrated in Fig. 5 a modiiied form of valve Sla for theby-pass. In the form of valve there illustrated, the valve member 35a isin the form of a plain cylindrical member having a close t in the valvecasing 3l la. The outlet pipe Sila for the by-pass is connected to aport 30h which is normally covered by the valve member a which is biasedto the closed position by the spring 3l as in Fig. 4. In moving over thewalls or. the cylinder, any dirt or other foreign matter isautomatically removed from the walls thereof thereby eliminating thepossibility of its interfering with the operation of the valve.Furthermore, any grease or oily substance which may find its way intothe water, forms a seal between the valve member 35a and the walls ofthe casing 3l la.

It is to be understood that the control means which I employ willcontinuously operate while my heating system is in use. Furthermore, themeans which I employ to regulate the admission of water to the heatingsystem and the release of steam therefrom maintain the heating systemand the water cooling system of the motor as separate systems, the twobeing entirely operable in a functional sense independently ofeachother. The water cooling system is utilized merely as a source ofwater supply and as a ycondenser for the excessive steam developed inthe heating system. Furthermore, it is to be understood that the heatingsystem is so designed that the excessive steam generated therein andwhich is exhausted through the water coolingsystem is negligible as aheating factor of the motor cooling system.

A few of the evident advantages of my invention reside in the fact thatit may be easily and quickly installed, requires a negligible amount ofliquid, and may be used with hot water radiators of installed systems.

While I have referred to water as the liquid medium employed, I do notlimit myself thereto, but may use any fluid which may be suitably usedin a motor cooling system and which may be vaporized in a vapor heatingsystem.

While I have described my invention in its preferred embodiments, it isto be understood that the words which I have used are words ofdescription rather than of limitation and that changes within thepurview of the appended claims may be made without departing from thetrue scope and spirit of my invention in its broader aspects.

What I claim is:

l. In a vapor generating and heating system, a source of liquid supplynormally under pressure during normal operating conditions, anunobstructed closed circulating system in which the liquid circulatesindependently of said source or liquid supply and including a vaporgenerator and a vapor radiator, means providing a single passage betweensaid source of liquid supply and said circulating system, a check valvelocated in said passage opening toward said circulating system, and aby-pass around said check valve and including a normally closed valveoperable to open position in response to a predetermined pressure insaid circulating system.

2. In a heating system, a closed circulating system including a vaporgenerator and a vapor radiator with means providing communicationbetween the two, a source of liquid supply under a pressure which may behigher than that in said circulating system under certain conditions ofoperation, means dening a passage communicating with said source of,liquid supply and with said system, a check valve located in saidpassage for normally preventingV the return of fluid from said system tosaid passage, a by-pass around said check valve, a valve located in saidby-pass, and yielding means for normally retaining said Valve closed andoperable to an open position in response to a pressure in excess of apredetermined pressure in said system.

CLAUDE G. BORDEAUX.

